Heat gun



FIG. 1 is a side elevational view of a heat gun, showing my new design, the side opposite being the same as the side shown, except for the screws shown;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a top plan view thereof;

FIG. 4 is a front elevational view thereof;

FIG. 5 is a rear elevational view thereof; and,

FIG. 6 is a view taken along the line 6--6 of FIG. 1 to further show the contour of the heat gun. 

The ornamental design for a heat gun, as shown and described. 